74985378 has 64 divisors (see below), whose sum is σ = 167946240. Its totient is φ = 22171968.

The previous prime is 74985377. The next prime is 74985397. The reversal of 74985378 is 87358947.

It is a self number, because there is not a number n which added to its sum of digits gives 74985378.

It is not an unprimeable number, because it can be changed into a prime (74985377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 264825 + ... + 265107.

It is an arithmetic number, because the mean of its divisors is an integer number (2624160).

Almost surely, 2^74985378 is an apocalyptic number.

74985378 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 74985378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83973120).

74985378 is an abundant number, since it is smaller than the sum of its proper divisors (92960862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74985378 is a wasteful number, since it uses less digits than its factorization.

74985378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423.

The product of its digits is 1693440, while the sum is 51.

The square root of 74985378 is about 8659.4097951304. The cubic root of 74985378 is about 421.6889249309.

The spelling of 74985378 in words is "seventy-four million, nine hundred eighty-five thousand, three hundred seventy-eight".